Apparatus for making bags or containers.



W. ROSE. APPARATUS FOR MAKING BAGS 0R CONTAINERS.

APPLICATION FILED JAN. 27, 1913.

Patented June 2, 1914.

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A. W. ROSE. APPARATUS FOR MAKING BAGS OR CONTAINERS.

. APPLICATION FILED JAN. 27,1913. 1 ()99 1 3() Patented June 2,1914.

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UNITED STATES WILLIAM ROSE, OF GAINSBOROUGH, ENGLAND.

APPARATUS FOR MAKING BAGS 0R CONTAINERS.

Specification of Letters Patent.

Patented June 2, 191 1.

Application filed January 27, 1913. Serial N 0. 744,396.

To all whom it may concern:

Be it known that I, WILLIAM Rose, a subject of the King of Great Britain and Ireland, of Albion WVorks, Gainsborough, in the county of Lincoln, England, have invented new and useful Improvements in Apparatus for Making Bags or Containers, of which the following is a specification.

This invention relates to apparatus for making bags, or containers, and more particularly to the formers upon which the bags, or containers, are made and to the presser foot, or bar, therefor, the said formers and presser foot, or bar, being of the kind described, and illustrated in the specification of my British Letters Patent No. 31419 A. D. 1912 where the formers are made in two parts, one fixed and one made movable, the fixed part being secured to, or formed in one with an arm fixed to a rotating spindle, or sleeve, and the movable part being secured to, or formed in one with, an arm pivotally mounted on a center toward the axis of the rotating spindle, or sleeve, and the said formers having asso- {ciated therewith a presser foot, or bar, adapted to be operated, at the proper time, to hold the longitudinal seam of the bag, or container, to the said former.

In the former described and shown in my aforesaid British Letters Patent the pressure of the presser foot, or bar, is borne by the movable part of the former so that there is a tendency for the said movable part to be moved toward the fixed part of the former by the said presser foot, or bar, and consequently only a limited amount of pressure can be applied by the presser foot, or bar, to the longitudinal seam of the bag, or container, on the said former.

My present invention has for its objects to provide a former 1n which the fixed part thereof takes the pressure of the presser foot, or bar, and in providing means whereby the said p resser foot, or bar, can exert greater pressure thereon so that the longitudinal seam of the bag, or container, on the said former is more securely held.

I will describe my invention with reference to the accompanying drawings in which-- Figure 1 shows in side elevation; Fig. 2 in plan, and Fig. 3 in end elevation a former and a prcsser foot, or bar, therefor constructed, arranged and adapted to operate in accordance with my said invention. Fig. 4: is a similar view to Fig. l but shows the parts in a difierent position to that shown in the said Fig. 1.

The sleeve, or spindle, 39 on which the formers are radially secured may be mounted in a Vertical, horizontal, or angular position, but I will assume that it is mounted in such a manner that the formers rotate intermittently in a horizontal plane. The formers are of a shape corresponding to the shape of the bags, or containers, to be made, such for instance as square, or rectangular. I will presume in describing my invention that the bags, or containers, are to be of rectangular section.

The fixed part 52 of the former is secured to, or formed in one with, an arm 59 secured to the sleeve, or spindle, 39 and the movable part 53 of the said former is secured to, or formed in one with, an arm 55 pivotally mounted on a pin 5-1- on the arm 59 of the said fixed part 52 of the former. The movable part 53 is caused to turn, at the proper times, on its pivot pin 54- to approach, or rccede from the fixed part 52 similarly as in the arrangement shown and described in our aforesaid Letters Patent, but the position of the fixed and movable parts 52 and 53 respectively are, in the arrangement in accordance with this invention, in the reverse order to that shown in the drawings accompanying my aforesaid patent, so that, as shown in the accompanying drawings, the presser foot, or bar, 62, is adjacent to the said fixed part 52 and the saidfixed part takes the pressure when the said presser foot, or bar, is lowered. The movable part 53 is caused to turn 011 its pivot pin 54- so as to approach slightly to the fixed part 52 to facilitate the removal of the bag, or container, from the former by an extension 155 of the arm 55, which extension, by the rotation of the sleeve, or spindle, 39 carrying the formers engages, at the proper time, with an antifriction roller 56 carried on a fixed part 71 of the apparatus. Upon the further rotation of the former sleeve, or spindle 39 t.

the extension 155 is moved out of engagement with the roller 56 and the movable part 53, is caused to turn on its pivot pm Si so as to slightly recede from the fixed part 52 by a spring 93 between the fixed and movable parts 52 and 53 respectively. A hooked projection 94 on the movable part 53 by engaging with a pin 95 on the fixed part 52 limits the movement of the movable part away from the fixed part. i

The presser foot, or bar, 62, is hinged to the outer end of a carrier bar 81, the inner end of which is mounted in bearings 82, formed on the former arm 59 as shown, or it may be mounted on the former sleeve, or spindle, 39. The carrier bar 81 is caused to turn in its bearings 82 to raise and lower the presser foot, or bar, 62, by means of a suitably operated lever 83, pivotally mounted on a pin 84 carried by the forked end of an arm 159 formed in one with the arm 59 of the fixed part 52 of the former the said lever 83 being connected to the said carrier bar 81, by toggle links, or levers, 85. A suitable length of the outer end 86 of the carrier bar 81 is made resilient by reducing its thickness transversely so that upon the carrier bar 81 being turned to lower the presser foot, or bar, 62, onto the cemented longitudinal seam of the bag, or container, and pressure being exerted on the said carrier bar 81, the outer end 86 thereof will yield, or bend, and a greatly increased pressure of the said foot, or bar, 62 on the seam will be thereby obtained, and upon the release of the pressure the carrier bar 81 will resume its normal shape.

The relative positions of the center upon which the operating lever 83 turns and the pivotal centers 89 and 90 of the toggle links, or levers, S5, connecting it to the carrier bar 81 are such that immediately before the said operating lever 83 has completed its forward movement the said centers are in alinement. By a slight further forward movement of the operating lever, 83 (which further forward movement is limited by suitably arranged stops 91 and 92) the said centers 89 and 90 are moved slightly out of alinement so that by this means and in conjunction with the bending of the carrier bar 81, the whole of the mechanism is locked until the operating lever 83 is moved in the opposite, or backward, direct-ion. The aforesaid op erating lever 83 may be actuated to raiseand lower the presser foot, or bar, 62, at the required times, by any suitable arrangement of cams, rods, levers, or the like, such, for example as that shown and described in my aforesaid patent.

It will be seen from the foregoing description that a considerable amount of pressure can be applied to the cemented longitudinal seams of the bags, which effectively assists the adhesive material to make the seam secure. If desired a guard ring, arm or other suitable means, may be employed to hold the operating lever 83 in its extreme return, or backward, position during the movement of the aforesaid former to its next succeeding position.

The said presser foot, or bar, 62, may, if desired, be provided at the end nearest the center of the former sleeve 39, with a depression, or recess 87, preferably V-shaped in cross section, and a corresponding straight ridge or raised bar 88 be made in the fixed part 52 of the said former, so that when the said presser foot or bar 62 is brought down onto the seam of the bag, and is locked in position, the aforesaid straight ridge, or bar, 88, on the former presses the paper into the said depression, or recess 87, in the said presser foot or bar. By this means a preliminary crease is given to that part of the bag and the paper thereof is more easily folded along the said line when required, for instance when the bag is being folded to inclose its contents, and very neat and perfectly shaped packages are produced.

The mechanism hereinbefore described and illustrated in the accompanying drawings is preferably so constructed and arranged as to permit of the necessary lubrication of the parts without danger of the lubricant coming into contact with the bags, or containers, or that portion of the formers upon which the bags, or containers, are formed. I prefer to construct the whole of the said mechanism, with the exception of the roller 56, and the guard ring, or arm, in such a manner that each comprises a selfcontained piece of mechanism and any desired number of such self-contained pieces of mechanism can be easily afiixed to the former sleeve, or spindle, and can be easily removed therefrom when required.

I claim as my invention:

1. In apparatus for making paper bags, a former comprising a supporting arm, a fixed part rigid therewith and a movable part pivoted thereto, together with a presser foot movable into engagement with the fixed part of the former, substantially as de scribed.

2. In apparatus for making paper bags, a former comprising a supporting arm, a fixed part rigid therewith and a movable part pivoted thereto, in combination with a presser pivoted on said arm and movable into engagement with the fixed part of the former, substantially as described.

3. In apparatus for making paper bags, a former comprising a supporting arm, a fixed part rigid therewith and a movable part pivoted thereto, and spring means tending to force said movable part away from the fixed part and engaging members on said parts limiting the extent of their separation, substantially as described.

4:. In apparatus for making paper bags, a former comprising a supporting arm, a fixed part rigid therewith, a movable part pivoted thereto, in combination with a presser foot pivoted on the axis of the movable part and movable into engagementwith the fixed part of the former, substantially as described.

5'. In apparatus for making bags, a former comprising a fixed part and a movable art, an interposed spring tending to force said movable part away from said fixed part, a hooked projection on one of said parts and a pin on the other of said parts, said hook and pin being engaged with lost motion and serving to limit the extent of separation of said parts by the spring, substantially as described.

6. In apparatus of the character described, a flanged carrier sleeve, a series of self-com tained formers thereon, each comprising a rigid bracket secured to the flange of said carrier sleeve and an extension forming a fixed part of said former, a movable part of said former pivoted to said bracket, and a presser foot pivoted on said bracket and movable into engagement with said fixed portion of said former, substantially as described.

7 In apparatus of the character described, a flanged carrier sleeve, a series of self-contained formers thereon, each comprising a rigid bracket secured to the fiange of said carrier sleeve, and an extension forming a fixed part of said former, a movable part of said former pivoted to said bracket, and a presser foot pivoted on said bracket and movable into engagement with said fixed portion of said former, said presser foot and movable portion of the former having a common axis.

8. In apparatus of the character described, a flanged carrier sleeve, a series of self-contained formers thereon, each comprising a rigid bracket secured to the flange of said carrier sleeve and an extension forming a fixed part of said former, a movable part of said former pivoted to said bracket, and a presser foot pivoted on said bracket and movable into engagement with said fixed portion of said former, together with an arm on said bracket and lever means pivoted thereon for bringing said presser foot into engagement with the fixed member of the former, substantially as described.

9. In apparatus for making paper bags, a former comprising a supporting arm, a fixed part rigid therewith, a movable part pivoted thereto, a presser foot, a pivoted lever carrying the same and adapted to move said presser foot into engagement with the fixed part of the former, and actuating means engaging said lever intermediate its axis and the presser foot, only that portion of said lever which lies between the presser foot and the point of engagement by its ac tuating means being flexible, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM ROSE.

Witnesses:

CHARLES W. Cnocmnz, Gnonen GRANns.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of I'atentl, Washington, D. G. 

